Invisible Apple Cake(Gâteau Invisible Aux Pommes) This beautiful French dessert is made by layering a TON of thinly sliced apples in a custard-like batter. The apples almost disappear into the cake, hence the name!It’s somewhat similar to clafoutis, but with a much higher ratio of fruit to batter. This cake is also not too sweet, and it’s made almost entirely with fresh apples!You can serve it with anything from powdered sugar, to whipped cream, to ice cream and/or caramel sauce.